I hired a car through Europcar in Paris last October. A month after returning, I received a letter from Europcar stating that my credit card had been debited due to a traffic infringement during my hire period. I was unaware of having received any traffic or parking tickets, or having sped in any restricted areas, so I asked for details. I have not been supplied with any evidence and have a niggling doubt that someone, somewhere, may be on the make. MS, Isle of Man

Europcar said it sympathises, but added that it is unable to obtain further information on your behalf. "French law requires that details of any infringement are only provided to the customer," a spokesman said. "After a traffic incident involving a Europcar hire car, the authorities contact Europcar to request driver details so they can issue the fine direct. As stated in Europcar's terms and conditions, there is an admin charge which is passed on to the customer. At no point is any paperwork provided to Europcar."

You must dispute whether you committed the infringement with the authorities (namely, the Trésorerie du Contrôle Automatisé), which you are pursuing. In the meantime, we would like to hear from other readers who have been hit with an overseas traffic infringement without evidence.

You can email Mark King at your.problems@observer.co.uk or write to Mark King, Your Problems, The Observer, Kings Place, 90 York Way, London N1 9GU. Include a phone number.